Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E)

Sho Fukuda, Chieko Kondou, Nobuo Takata, Shigeru Koyama

    研究成果: Contribution to conferencePaper査読

    3 被引用数 (Scopus)

    抄録

    Cycle performance of a vapor compression loop using low GWP refrigerant mixtures are experimentally assessed in this study. The coefficient of performance (COP) of typical heating and cooling mode of air conditioning conditions are measured for R-32/1234ze(E) and R-744/32/1234ze(E). The COP of R-32/1234ze(E)(43/57 mass%) and R-744/32/1234ze(E) (4/43/53 mass%) of GWP = 300 slightly excesses that of the conventional refrigerant R410A. The COP of R-32/1234ze(E)(28/72 mass%) and R-744/32/1234ze(E) (9/29/62 mass%) of GWP = 200 is however lower than that of R410A. The characteristics in COP are explained by the analysis on irreversible loss. The insufficiency of volumetric capacity in the mixtures of GWP = 200 significantly increases the loss related to pressure drop. The less subcooling interfered with the large temperature glide of mixtures cause large throttling loss. The unmatched temperature glide to the temperature change of heat source and/or heat sink fluid increases the irreversible loss in heat exchangers.

    本文言語英語
    出版ステータス出版済み - 2014
    イベント7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014 - Jeju Island, 大韓民国
    継続期間: 5 18 20145 21 2014

    その他

    その他7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014
    国/地域大韓民国
    CityJeju Island
    Period5/18/145/21/14

    All Science Journal Classification (ASJC) codes

    • 電子工学および電気工学
    • 凝縮系物理学
    • 制御およびシステム工学
    • 機械工学

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